JP2007051836A - Cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooker having a seal structure excellent in sealing property and difficult to fix. <P>SOLUTION: The cooker comprises a top plate 2 covering over a product body 1, frames 3 and 4 fixing the periphery of the top plate 2, and a seal member 6 sealing the clearance between the frames 3 and 4 and a cabinet 7 storing the product body 1. As the seal member 6, a foamed material consisting of urethane or polyisobutylene is used. According to this, since the urethane and polyisobutylene used as the foamed material are excellent in characteristic to compression permanet distortion and have a chemical structure hardly causing hydrogen bonding, they show excellent characteristic to fixation. Therefore, the cooker can have a seal structure excellent in sealing property and difficult to fix. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a built-in type cooker for storing a product main body in a cabinet.

Conventional built-in type cookers have adopted a structure in which a sealing material is integrated with a portion of a frame that comes into contact with the cabinet in order to ensure sealing performance with the cabinet. Further, as the sealing material, a foam material made of silicon or EPDM is used, and in the case of silicon, it is integrated by adhesion, and in the case of EPDM, it is integrated by double-sided tape (see, for example, Patent Document 1).
JP-A-11-239521

  However, in the conventional configuration, it is necessary to remove the product body when trouble occurs due to periodic product maintenance or some reason, or when remodeling, etc., but at this time, the sealing material is attached to the cabinet. There was a problem that the product itself could not be removed easily because it was fixed.

  This tendency was particularly strong when a foam material made of silicon was used as the seal material. This is because, in silicon, a phenomenon occurs in which it adheres to stainless steel, artificial marble, or the like constituting the cabinet by hydrogen bonding during use. On the other hand, when a foamed material made of EPDM is used as the sealing material, this tendency is hardly observed, but there is a tendency that the sealing material is crushed by the weight of the product body and the sealing performance is lowered.

  This invention solves the said conventional subject, and it aims at providing the cooking device which has the sealing structure which is hard to stick together while being excellent in sealing performance.

  In order to solve the above-described conventional problems, the cooker of the present invention includes a top plate that covers an upper part of a product body, a frame that fixes the periphery of the top plate, and a gap between the frame and a cabinet that houses the product body. The sealing material is a foamed material made of urethane or polyisobutylene.

  As a result, urethane and polyisobutylene used as foaming materials are excellent in properties against compression set, and have a structure in which hydrogen bonding is unlikely to occur on the chemical structure. It can be set as the cooking appliance which has the sealing structure which is excellent in a sealing property, and is hard to adhere.

  The cooker of the present invention provides a cooker having a sealing structure that is excellent in sealing properties and difficult to stick.

  The first invention includes a top plate that covers an upper part of a product body, a frame that fixes the periphery of the top plate, and a sealing material that seals a gap between the frame and a cabinet that houses the product body. By using a foaming material made of urethane or polyisobutylene as the material, urethane and polyisobutylene used as foaming materials have excellent properties against compression set, and because of their chemical structure, hydrogen bonding is unlikely to occur. Therefore, it is possible to provide a cooking device that has excellent sealing properties and has a sealing structure that has excellent sealing properties and is difficult to adhere.

  The second invention includes a top plate that covers an upper portion of a product main body, a frame that fixes the periphery of the top plate, and a sealing material that seals a gap between the frame and a cabinet that houses the product main body, and the seal As a material, a cooker in which a foam material is used and an anti-adhesion layer for preventing adhesion to the cabinet is formed on the surface of the foam material is excellent in sealing performance as a sealing material, but is easily fixed by hydrogen bonding. Even when a foamed material made of silicon is used, it is possible to obtain a seal configuration that is hard to stick as well as having a sealing property.

  In the third invention, in particular, in the second invention, by using any one of silicon, urethane, and polyisobutylene as the foaming material, the sealing characteristics can be further improved. All of these have independent foam and can be increased in foaming ratio, so that they are excellent in compressibility.

  In the fourth invention, in particular, in the second or third invention, the adhesion preventing layer can be prevented from adhering to the cabinet by being made of a coating layer mainly composed of a fluorine compound or molybdenum disulfide. . In particular, since the fluorine-based compound has non-adhesiveness, it has an excellent anti-sticking effect.

  In the fifth invention, in particular, in the second or third invention, the sticking prevention layer is made of a sheet of PET, EPDM or the like which hardly causes hydrogen bonding, so that the sticking to the cabinet can be completely prevented. Originally, PET and EPDM are materials that do not easily cause hydrogen bonding, so that these sheets can be prevented from sticking by being placed between the cabinet and the product body.

  In the sixth invention, in particular, in any one of the second, third, and fifth inventions, the foaming material and the anti-adhesion layer are integrated through the double-sided tape, so that the anti-adhesion layer is easily foamed. It can be integrated into the material and sticking can be prevented.

  In a seventh aspect of the invention, in particular, in any one of the first to third aspects of the invention, the foaming material as the sealing material is foamed and cured by heat treatment and bonded to the frame, and is reheated at a temperature higher than the heat treatment temperature. As a result, it is possible to prevent sticking even if a foaming material such as silicon, which tends to occur such as hydrogen bonding, is used as the sealing material. In general, when using foam as a sealing material, heat treatment for foaming and curing is performed, but if the heat treatment at this time is insufficient, polymerization of the foam will be insufficient, and hydrogen bonding will occur that will cause sticking Many places remain. However, re-heat treatment at a temperature higher than the heat treatment temperature can promote the polymerization of the foamed material, and the number of occurrences of hydrogen bonds that cause sticking is significantly reduced, so sticking can be suppressed. In addition, if the heat treatment temperature during foaming / curing is increased and the polymerization of the foam material is promoted at once, the foaming ratio will change significantly, causing inconveniences and securing a stable seal even though it can prevent sticking. It becomes difficult to do.

  Embodiments of the present invention will be described below with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 and 2 show a cooker according to Embodiment 1 of the present invention.

  As shown in the figure, a product main body 1 such as an induction heating cooker has a box shape, and a top plate 2 is provided so as to cover an upper portion thereof. The top plate 2 is used for placing a pan or the like, and is made of crystallized glass, and its periphery is fixed to the product body 1 with frames 3 and 4 made of stainless steel. The frames 3 and 4 are a two-component type and are integrated with the top plate 2 with an adhesive layer 5 made of an addition reaction type silicon adhesive. A seal material 6 made of a polyisobutylene foam material is integrated with a portion of the frame 4 that comes into contact with a cabinet 7 such as a system kitchen that houses the product main body 1. A cooker having such a configuration is installed in a cabinet 7 such as a system kitchen via a sealing material 6.

  Next, the operation of the cooking device in this embodiment will be described.

  First, the production of this cooker will be described. The frame 4 is previously degreased. The sealing material 6 made of a polyisobutylene foaming material is a two-component type, and is mixed and discharged to a portion of the frame 4 that contacts the cabinet 7 with a dedicated mixing head. Thereafter, the resultant is heated at 100 ° C. for 6 minutes to be foamed / cured and bonded to the frame 4.

  In addition, in order to compare with what used the foaming material of silicon shown by background art as a sealing material, the cooker of the same structure was prepared by the method similar to the above-mentioned.

  In order to compare the presence or absence of fixation with the cabinet 7 of each cooker thus prepared, evaluation was performed as follows.

  First, a 20 kg load is placed on the top plate 2, and salad oil is dripped around the sealing material 6. In this state, it was left for 1 month in an environment of 100 ° C. After being left for one month, the cooker was removed from the cabinet 7 and checked for sticking. As a result, the cooker using silicon foam as the sealing material 6 was firmly fixed to the cabinet 7. However, the cooker using polyisobutylene foam according to the present embodiment was fixed to the cabinet 7. Was not seen.

  From the above, by using a foamed material made of polyisobutylene that hardly causes hydrogen bonding as the sealing material 6 as in the present embodiment, it is possible to ensure sealing performance and prevent sticking. It should be noted that the same effect can be obtained even when a foam material made of urethane that hardly causes hydrogen bonding is used as the seal material 6.

(Embodiment 2)
FIG. 3 shows details of the sealing material of the cooker in the second embodiment of the present invention.

  As shown in the figure, a seal material 6 is bonded to a portion of the frame 4 that contacts the cabinet 7, and a foam material 6a made of silicon is located on the frame 4 side of the seal material 6. An anti-adhesion layer 6b composed mainly of a fluorine-based compound that prevents adhering to the cabinet 7 is formed.

  The cooker having such a configuration is installed in a cabinet 7 such as a system kitchen via a sealing material 6.

  Next, the operation in this embodiment will be described.

  First, the production of this cooker will be described. The stainless steel frame 4 is previously degreased. The foam material 6a made of silicon is a two-component type, and is mixed and discharged to a portion of the frame 4 that contacts the cabinet 7 with a dedicated mixing head. Thereafter, the frame 4 is heated at 100 ° C. for 6 minutes to be foamed and cured, and the foam material 6 a is adhered to the frame 4. Then, the material which has a fluorine-type compound as a main component is sprayed on the surface of the foaming material 6a with a spray, and the sticking prevention layer 6b is formed.

  In addition, in order to compare with the case where only the silicon foam material shown by background art was used, the cooking device in this Embodiment of the same structure was prepared by the method similar to the above. However, silicon was similarly used as the foam material 6a.

  When the presence or absence of sticking of the cooker thus made to the cabinet 7 was confirmed by the same method as shown in the first embodiment, no sticking was found. Moreover, the sealing performance was sufficiently secured.

  From the above, by using the foam material 6a as the sealing material 6 as in the present embodiment and forming the anti-adhesion layer 6b on the surface thereof, the sealing property can be secured and the cabirot 7 can be used even for a long time. It will not stick.

  If urethane or polyisobutylene is used as the foaming material 6a in addition to silicon, fixing can be prevented more completely. Further, the same effect can be obtained by using a layer mainly composed of molybdenum disulfide in addition to the fluorine-based compound as the anti-adhesion layer 6b.

(Embodiment 3)
Next, the seal structure of the cooking device in Embodiment 3 of this invention is demonstrated.

  In the present embodiment, a foam material 6a made of silicon is bonded onto the frame 4, and an anti-adhesion layer 6b made of a thin sheet of PET is integrated thereon with a double-sided tape to form a seal material 6.

  When the presence or absence of sticking of the cooker thus made to the cabinet 7 was confirmed by the same method as described in Embodiment 1, no sticking was found. Moreover, the sealing performance was sufficiently secured.

  From the above, in the present embodiment, PET itself is a material that is difficult to be fixed by hydrogen bonding, and by integrating this thinly on the foam material 6a, the sealing property is secured and the fixing is suppressed. Can do. The same effect can be obtained by using an EPDM sheet instead of PET.

(Embodiment 4)
Next, the cooker in Embodiment 4 of this invention is demonstrated.

  In the present embodiment, a foaming material made of silicon is used as the sealing material 6, and heat treatment is performed at 100 ° C. for 6 minutes for foaming / curing and adhering to the frame 4. Reheated at 5 ° C for 5 minutes.

  When the presence or absence of sticking of the cooker thus made to the cabinet 7 was confirmed by the same method as described in Embodiment 1, no sticking was found. Moreover, the sealing performance was sufficiently secured.

  In this way, by performing reheat treatment at a temperature higher than the heat treatment temperature after the heat treatment for foaming / curing, polymerization of the foamed material can be promoted, and the occurrence of hydrogen bonds that cause sticking is significantly reduced. Therefore, the sticking can be suppressed even with the sealing material 6 using the foaming material made of silicon which is easy to stick. In addition, the same effect is obtained in the sealing material 6 using a foam material made of urethane other than silicon or polyisobutylene, and these are foam materials that are originally difficult to adhere, so that the anti-adhesion effect can be ensured. it can.

  As described above, the cooker according to the present embodiment can provide a cooker having a sealing configuration that has both high sealing performance and an anti-adhesion effect.

  In each of the above-described first to fourth embodiments, the periphery of the top plate 2 covering the top of the product body 1 is fixed with the top frame 3 and the under frame 4, but this is particularly limited to this configuration. Other configurations such as a configuration in which only the frame 3 is fixed to the cabinet 7 may be used.

  As described above, the cooking device according to the present invention has a sealing structure that has excellent sealing properties and is difficult to be fixed, and thus can be applied to all built-in type cooking devices in which a product main body is stored in a cabinet, and induction heating cooking. It can also be applied to ovens, halogen heaters, gas cookers, and electric cooking heaters.

The perspective view of the cooker in Embodiment 1 of this invention Cross section of the main part of the cooker Enlarged sectional view of part A in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Product main body 2 Top pout 3, 4 Frame 5 Adhesion layer 6 Sealing material 6a Foaming material 6b Adhesion prevention layer 7 Cabinet

Claims (7)

A top plate that covers the top of the product body, a frame that fixes the periphery of the top plate, and a sealing material that seals a gap between the frame and the cabinet that houses the product body. A cooker that uses foam made of isobutylene. A top plate covering an upper part of the product main body, a frame for fixing the periphery of the top plate, and a sealing material for sealing a gap between the frame and a cabinet for storing the product main body, the foaming material being used as the sealing material A cooker in which an anti-adhesion layer for preventing adhesion to a cabinet is formed on the surface of the foam material while being used. The cooker according to claim 2, wherein any one of silicon, urethane, and polyisobutylene is used as the foaming material. The cooking device according to claim 2 or 3, comprising a film layer mainly composed of a fluorine-based compound or molybdenum disulfide as the anti-adhesion layer. The cooker according to claim 2 or 3, comprising a sheet of PET, EPDM, or the like that hardly causes hydrogen bonding as an anti-adhesion layer. The cooker according to any one of claims 2, 3, and 5, wherein the foam material and the anti-adhesion layer are integrated via a double-sided tape. The cooker according to any one of claims 1 to 3, wherein a foaming material as a sealing material is foamed and cured by heat treatment and adhered to the frame, and reheated at a temperature higher than the heat treatment temperature.

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